Use of insufficiently random values in scapy - #VU148429
Published: September 9, 2026
Vulnerability identifier: #VU148429
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-330
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to use of insufficiently random values in the EncryptedPreMasterSecret class when establishing a TLS 1.2 connection using an RSA cipher suite. A remote attacker can observe the TLS handshake and traffic to disclose sensitive information.
The issue is limited to the RSA key-exchange path; TLS 1.3 and ephemeral Diffie-Hellman cipher suites do not use the affected class.
Affected software
scapy
Remediation
Install security update from vendor's website.
scapy - update to 2.8.0